Green’s Dictionary of Slang

bonified adj.

[? Fr. bon, good + sfx -ified or pron. of Lat. bona fide, genuine, lit. ‘in good faith’]

(US black) competent, qualified, the right man for the job.

[US]Last Poets ‘Wake Up Niggers’ 🎵 Bonified members of Niggers Anonymous.
[US]R. Klein Jailhouse Jargon and Street Sl. [unpub. ms.].